Using JavaScript to encrypt string into Base64

markdown # Introduce We need 2 files: app.html and app.js. You can find the source code at [Github page](https://github.com/orange2008/js-base64). # Effect graph When first access:
When click 'Encryption':
Type in your text, then click OK:
When click 'Decryption':
Type in your base64 code, then click OK: